Adam has some money to buy some stickers.
If he buys 5 stickers, he will have $10 left.
If he buys 7 stickers, he will need $8 more.
- How much does each sticker cost?
- How much money does he have?
(a)
Difference in the number of stickers in both scenarios
= 7 - 5
= 2
To buy 2 stickers, he needs to use $10 that is left and get an extra of $8.
Difference in the amount to pay in both scenarios
= 10 + 8
= $18
Adam needs $18 to buy 2 extra stickers .
Cost of 2 stickers = $18
Cost of 1 sticker = 18 ÷ 2 = $9
(b)
Amount that he has
= Cost of 5 stickers + 10
= 5 x 9 + 10
= 45 + 10
= $55
Answer(s): (a) $9; (b) $55